Method of treating polysulfid solutions.



UNITED STATES PATENT .o arrcin.

nnwann o. HOLTON.-- or OLMSTED rantson c, Assmnoa To rm iannnwmy wrrmub GOII'ANY, or CLEVELAND, 01110,,kc0nronaTioN 0101110: I

METHOD or TREATING .POLYSULIIDI soL Trons,

1,254,908. 80 Drawing.

Toall whom it may concern;

Be it known that I, EDWARD C. HoLToN, a citizen of theUnited States, and a resident of Olmsted Falls, county of-Guyahoga, and State-of Ohio, have invented a new and useful Improvement in Methods of Treating Polysulfid Solutions, of which the following is a specification, the princi 1e of'the herein explaine and the. best mode in w eh I havecontemplated a1).- plyingthat principle, so as to distinguish it from other inventions.

The present invention relates to a new and improved composition having insecticidal, fungicidal and fertilizer properties, and also to ajmethod of producing such-composition. .7

The invention deals with polysulfids and particularly with calcium polysulfids, 'It is 'of course known that'polysulfids of calcium are- 'produced by the action of sulfur on monosul fids, oxids and hydrdxids of cal cium under suitable conditions, and itis known that when lime sulfur is produced by boiling lime in water with sulfur, the .polysulfidwhich is formed is chiefl thetetrasulfid of calcium, but when calbium sulfhydrate is boiled in water-with sulfur the prod-. uct ischiefly the pent asulfid of calcium.

These polysulfidshave been found to crystallize with a number of molecules of water as indicated the-formulas,.-.

CaSpQHJ) I oismngo).

o The result of this crystallized water, in the Joly-sulfide is to render them very unstable,

it-y'of practicallyto 40 Baum, I'add a suitable water soluble substance in small amount, preferably from 1 to 5% of the 'weight'of the polysulfid in solution. There specification of Letters Patent; I 29.F1918'.-.- Application filed December 1, 1915. s=r1a1i1o..e4,4r?.

' lowing steps. To a suitable solution of polysulfid,1preferably having a specific gravare a number of substances which maybe used for this purpose and which will haveno deleterious action. on the pol sulfid and yet w ll havethe stabilizing in uence that is deslred and among such substances are cane. sugar, saccharoses, glucoses, maltoses,

dextrin and other soluble carbohydrates and the soluble substances formed byacombining these with inorganic bases such-.asIoxids of I alkaline earth metaL- Sdmilarlyjsuitable salts or formic, acetic and --other --organic acids as well as water soluble salts -of-vsul-- fonlc acids such for example as. naphthol.

monosulfonates, may be used for this purpose. Among these various substances which- .may be used, cane sugar would preferably be employed in many cases as. it exerts the necessary stabilizing, and reinforcing efiect onthe polysulfid and has no deleterious action whatever, either on the nature of the polysulfid or ,on the use to which'the-final, product is to be ut.

This polysulfi solution to which; .canev sugar-or another suitable water soluble sub-- although one giving very good results eonm the airfiand to causedecomposition into sulfurandlother substances which are very sparingly solublein water. purpose of producing polysulfids which will It is for the I be stableand which will not decompose while o fthe foregoing and related ends, said invention,- -then, consists of the method hereinafter fully described and particularly pointed out inthe claims.

- The-following descri tion'setsforth indetail one'approved met od ofearrying out the invention, such disclosed mode, however, constituting but one of the various ways inwhi'ch-the principle of theinvention 'may be used.

My improved method comprises the :61-

The final step 'finely pulverizing or grinding the dried roduct ofthe foregoing steps, thus producw sists in exposing the mixtureof poly-sulfid thin layer and for a very shortspace'of time,

'preferabl un'der'pre ssure lower {than-atmospheric. she substance, .whichthen resultsfrom this evaporation is-a mixture of poly-f stance hasbeen added, is then evaporated to dryness, preferably under pressures lower than atmospheric, by any desired process,

and cane sugar on a heated surface in a very sulfids and cane sugar with almost no water of crystallization in the olysulfid which has been reinforced and sta ilized'by the presence of the cane sugar. I

in the process consists m mg a very fine owcler which possesses very v .goodinsecticida fungicidal and fertilizing properties which is almost completely solutile in. water and of which the only parts that .are not soluble. have very good suspension qualities so that this productisvery well adapted for use ;in water as a spraying material.

rot

Other forms may be employed embodying the features of my invention instead of the one here explained, change being made in the form of construction, provided the elements stated by any of the following claims or the equivalent of such stated elements be employed, bother produced by my preferred method or by others embodying steps equivalent to those stated in the following in claims.

I therefore particularly point out and distinctly claim as my invent1on:

1. In a method of stabilizing polysulfids, the step which consists in addition to a pre- [5 pared polysulfid solution of specific gravity of 35?40 Baum or equivalent, of cane sugar in an amount equal to from one to five per cent. of the weight of polysulfid solution. 2. In a method of stabilizing polysulfids,

go the steps which consist in addition to apre-' pared polysulfid solution of 35-40 Baum, or equivalent, of cane sugar in an amount equal from one to five per cent. of Weight oY the solution, rapidly evaporating such solution to dryness, and then pulverizing the dried product.

3. An insecticidal compound comprising lime sulfur and cane sugar in the proportions of approximately eight to one.

4. In a method of stabilizing polysulfids, the step which consists in the addition to a prepared polysulfid solution of a substance formed by combining a \vate1-soluble earbo hydrate with an alkaline earth metal.

Signed by me, this 30th day of March, I

EDVVARI) (ll. HULTUN. Attested by WILLIAM R. Mat-numb, WILLIAM J. Cm'rcnnev. 

